package net.sf.jabref.imports;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.BibtexFields;
import net.sf.jabref.Globals;
import net.sf.jabref.Util;
import net.sf.jabref.util.CaseChanger;
/**
* Importer for the ISI Web of Science, INSPEC and Medline format.
*
* Documentation about ISI WOS format:
*
* <ul>
* <li>http://wos.isitrial.com/help/helpprn.html</li>
* </ul>
*
* <ul>
* <li>Check compatibility with other ISI2Bib tools like:
* http://www-lab.imr.tohoku.ac.jp/~t-nissie/computer/software/isi/ or
* http://www.tug.org/tex-archive/biblio/bibtex/utils/isi2bibtex/isi2bibtex or
* http://web.mit.edu/emilio/www/utils.html</li>
* <li>Deal with capitalization correctly</li>
* </ul>
*
* @author $Author: mortenalver $
* @version $Revision: 3047 $ ($Date: 2009-08-21 18:32:56 +0200 (Fr, 21 Aug 2009) $)
*
*/
public class IsiImporter extends ImportFormat {
/**
* Return the name of this import format.
*/
public String getFormatName() {
return "ISI";
}
/*
* (non-Javadoc)
*
* @see net.sf.jabref.imports.ImportFormat#getCLIId()
*/
public String getCLIId() {
return "isi";
}
// 2006.09.05: Modified pattern to avoid false positives for other files due to an
// extra | at the end:
static final Pattern isiPattern = Pattern.compile("FN ISI Export Format|VR 1.|PY \\d{4}");
/**
* Check whether the source is in the correct format for this importer.
*/
public boolean isRecognizedFormat(InputStream stream) throws IOException {
BufferedReader in = new BufferedReader(ImportFormatReader.getReaderDefaultEncoding(stream));
String str;
int i=0;
while (((str = in.readLine()) != null) && (i < 50)) {
/**
* The following line gives false positives for RIS files, so it
* should not be uncommented. The hypen is a characteristic of the
* RIS format.
*
* str = str.replace(" - ", "")
*/
if (isiPattern.matcher(str).find())
return true;
i++;
}
return false;
}
static Pattern subsupPattern = Pattern.compile("/(sub|sup)\\s+(.*?)\\s*/");
static public void processSubSup(HashMap<String, String> map) {
String[] subsup = { "title", "abstract", "review", "notes" };
for (int i = 0; i < subsup.length; i++) {
if (map.containsKey(subsup[i])) {
Matcher m = subsupPattern.matcher(map.get(subsup[i]));
StringBuffer sb = new StringBuffer();
while (m.find()) {
String group2 = m.group(2);
group2 = group2.replaceAll("\\$", "\\\\\\\\\\\\\\$"); // Escaping
// insanity!
// :-)
if (group2.length() > 1) {
group2 = "{" + group2 + "}";
}
if (m.group(1).equals("sub")) {
m.appendReplacement(sb, "\\$_" + group2 + "\\$");
} else {
m.appendReplacement(sb, "\\$^" + group2 + "\\$");
}
}
m.appendTail(sb);
map.put(subsup[i], sb.toString());
}
}
}
static public void processCapitalization(HashMap<String, String> map) {
String[] subsup = { "title", "journal", "publisher" };
for (int i = 0; i < subsup.length; i++) {
if (map.containsKey(subsup[i])) {
String s = map.get(subsup[i]);
if (s.toUpperCase().equals(s)) {
s = CaseChanger.changeCase(s, CaseChanger.UPPER_EACH_FIRST, true);
map.put(subsup[i], s);
}
}
}
}
/**
* Parse the entries in the source, and return a List of BibtexEntry
* objects.
*/
public List<BibtexEntry> importEntries(InputStream stream) throws IOException {
if (stream == null) {
throw new IOException("No stream given.");
}
ArrayList<BibtexEntry> bibitems = new ArrayList<BibtexEntry>();
StringBuffer sb = new StringBuffer();
BufferedReader in = new BufferedReader(ImportFormatReader.getReaderDefaultEncoding(stream));
// Pattern fieldPattern = Pattern.compile("^AU |^TI |^SO |^DT |^C1 |^AB
// |^ID |^BP |^PY |^SE |^PY |^VL |^IS ");
String str;
while ((str = in.readLine()) != null) {
if (str.length() < 3)
continue;
// begining of a new item
if (str.substring(0, 3).equals("PT "))
sb.append("::").append(str);
else {
String beg = str.substring(0, 3).trim();
// I could have used the fieldPattern regular expression instead
// however this seems to be
// quick and dirty and it works!
if (beg.length() == 2) {
sb.append(" ## "); // mark the begining of each field
sb.append(str);
} else {
sb.append("EOLEOL"); // mark the end of each line
sb.append(str.trim()); // remove the initial spaces
}
}
}
String[] entries = sb.toString().split("::");
HashMap<String, String> hm = new HashMap<String, String>();
// skip the first entry as it is either empty or has document header
for (int i = 0; i < entries.length; i++) {
String[] fields = entries[i].split(" ## ");
if (fields.length == 0)
fields = entries[i].split("\n");
String Type = "";
String PT = "";
String pages = "";
hm.clear();
nextField: for (int j = 0; j < fields.length; j++) {
// empty field don't do anything
if (fields[j].length() <= 2)
continue;
String beg = fields[j].substring(0, 2);
String value = fields[j].substring(3);
if (value.startsWith(" - ")) {
value = value.substring(3);
}
value = value.trim();
if (beg.equals("PT")) {
if (value.startsWith("J")) {
PT = "article";
} else {
PT = value;
}
Type = "article"; // make all of them PT?
} else if (beg.equals("TY")) {
if ("JOUR".equals(value))
Type = "article";
else if ("CONF".equals(value))
Type = "inproceedings";
} else if (beg.equals("JO"))
hm.put("booktitle", value);
else if (beg.equals("AU")) {
String author = isiAuthorsConvert(value.replaceAll("EOLEOL", " and "));
// if there is already someone there then append with "and"
if (hm.get("author") != null)
author = hm.get("author") + " and " + author;
hm.put("author", author);
} else if (beg.equals("TI"))
hm.put("title", value.replaceAll("EOLEOL", " "));
else if (beg.equals("SO") || beg.equals("JA"))
hm.put("journal", value.replaceAll("EOLEOL", " "));
else if (beg.equals("ID") || beg.equals("KW")) {
value = value.replaceAll("EOLEOL", " ");
String existingKeywords = hm.get("keywords");
if (existingKeywords != null && existingKeywords.indexOf(value) == -1) {
existingKeywords += ", " + value;
} else {
existingKeywords = value;
}
hm.put("keywords", existingKeywords);
} else if (beg.equals("AB"))
hm.put("abstract", value.replaceAll("EOLEOL", " "));
else if (beg.equals("BP") || beg.equals("BR") || beg.equals("SP"))
pages = value;
else if (beg.equals("EP")) {
int detpos = value.indexOf(' ');
// tweak for IEEE Explore
if (detpos != -1 && value.substring(0, detpos).trim().length() > 0)
value = value.substring(0, detpos);
pages = pages + "--" + value;
} else if (beg.equals("PS")) {
pages = parsePages(value);
} else if (beg.equals("AR"))
pages = value;
else if (beg.equals("IS"))
hm.put("number", value);
else if (beg.equals("PY"))
hm.put("year", value);
else if (beg.equals("VL"))
hm.put("volume", value);
else if (beg.equals("PU"))
hm.put("publisher", value);
else if (beg.equals("DI"))
hm.put("doi", value);
else if (beg.equals("PD")) {
String month = parseMonth(value);
if (month != null) {
hm.put("month", month);
continue nextField;
}
} else if (beg.equals("DT")) {
Type = value;
if (Type.equals("Review")) {
Type = "article"; // set "Review" in Note/Comment?
} else if (Type.startsWith("Article") || Type.startsWith("Journal")
|| PT.equals("article")) {
Type = "article";
continue;
} else {
Type = "misc";
}
} else if (beg.equals("CR")) {
hm.put("CitedReferences", value.replaceAll("EOLEOL", " ; ").trim());
} else {
// Preserve all other entries except
if (beg.equals("ER") || beg.equals("EF") || beg.equals("VR")
|| beg.equals("FN"))
continue nextField;
hm.put(beg, value);
}
}
if (!"".equals(pages))
hm.put("pages", pages);
// Skip empty entries
if (hm.size() == 0)
continue;
BibtexEntry b = new BibtexEntry(BibtexFields.DEFAULT_BIBTEXENTRY_ID, Globals
.getEntryType(Type));
// id assumes an existing database so don't
// Remove empty fields:
ArrayList<Object> toRemove = new ArrayList<Object>();
for (Iterator<String> it = hm.keySet().iterator(); it.hasNext();) {
Object key = it.next();
String content = hm.get(key);
if ((content == null) || (content.trim().length() == 0))
toRemove.add(key);
}
for (Iterator<Object> iterator = toRemove.iterator(); iterator.hasNext();) {
hm.remove(iterator.next());
}
// Polish entries
processSubSup(hm);
processCapitalization(hm);
b.setField(hm);
bibitems.add(b);
}
return bibitems;
}
public static String parsePages(String value) {
int lastDash = value.lastIndexOf("-");
return value.substring(0, lastDash) + "--" + value.substring(lastDash + 1);
}
public static String parseMonth(String value) {
String[] parts = value.split("\\s|\\-");
for (int ii = 0; ii < parts.length; ii++) {
if (Globals.MONTH_STRINGS.containsKey(parts[ii].toLowerCase())) {
return "#" + parts[ii].toLowerCase() + "#";
}
}
// Try two digit month
for (int ii = 0; ii < parts.length; ii++) {
int number;
try {
number = Integer.parseInt(parts[ii]);
if (number >= 1 && number <= 12) {
return "#" + Globals.MONTHS[number - 1] + "#";
}
} catch (NumberFormatException e) {
}
}
return null;
}
/**
* Will expand ISI first names.
*
* Fixed bug from:
* http://sourceforge.net/tracker/index.php?func=detail&aid=1542552&group_id=92314&atid=600306
*
*/
public static String isiAuthorConvert(String author) {
String[] s = author.split(",");
if (s.length != 2)
return author;
StringBuffer sb = new StringBuffer();
String last = s[0].trim();
sb.append(last).append(", ");
String first = s[1].trim();
String[] firstParts = first.split("\\s+");
for (int i = 0; i < firstParts.length; i++) {
first = firstParts[i];
// Do we have only uppercase chars?
if (first.toUpperCase().equals(first)) {
first = first.replaceAll("\\.", "");
for (int j = 0; j < first.length(); j++) {
sb.append(first.charAt(j)).append(".");
if (j < first.length() - 1)
sb.append(" ");
}
} else {
sb.append(first);
}
if (i < firstParts.length - 1) {
sb.append(" ");
}
}
return sb.toString();
}
public static String[] isiAuthorsConvert(String[] authors) {
String[] result = new String[authors.length];
for (int i = 0; i < result.length; i++) {
result[i] = isiAuthorConvert(authors[i]);
}
return result;
}
public static String isiAuthorsConvert(String authors) {
String[] s = isiAuthorsConvert(authors.split(" and |;"));
return Util.join(s, " and ", 0, s.length);
}
}